靶丸定位系统中的图像处理

Image Processing for the Automatic Positioning System of Pellet Target

靶丸定位是惯性约束核聚变 (ICF)实验中的关键性环节。介绍了靶丸定位系统 ,提出了一种靶丸定位过程中的图像处理方法。利用散焦测距原理 ,通过Variance和Brenner组合调焦评价函数 ,首先实现旋转和俯仰二维方向和一维平移找正 ;再利用质心法来实现二维平移找正。通过原理性实验 。

Pellet's position is the key of ICF experiment. The paper introduces an automatic positioning system, and also describes an image processing method which is used to achieve the pellet's automatic positioning. Based on the theory of distance measurement by defocusing, the spotting in two dimension of rotation and pitch, and one dimension of translating by using the improved focusing evaluation function which is the combination of variance and Brenner have been realized, respectively, and the spotting of translating in three dimensions has also been implemented by detecting the mass center.